| Geological Event: Description | Timescale | Formations Created | Examples | Human Safety |
|---|---|---|---|---|
|
-pressure build-up underground in the magma chamber
-magma flows through the vent and release -volcanic eruption, hot lava flows -eruption cloud, ash, and gases
- Where does pressure build-up before any volcanic eruption?
- Can you describe how does a volcanic eruption look like? |
-abrupt, explosive
- slow, effusive
-What two main types of volcanic eruptions?
|
- mountains
- craters - caldera - islands
-What are different types of land formations created by volcanoes?
|
- Mount Shasta, CA
- Crater Lake, OR - Yellowstone, WY - Hawaii, HI
-What are the examples of each land formation by volcanoes?
|
- warning system
- no building on an active site
-How can we keep people safe from a volcanic eruption?
|
|
- movement of Earth’s crust
- crust made by land plates - plate tectonics - fault line - tension released
-How does an earthquake form?
-What are the plate boundaries called? |
- abrupt
- seconds of shaking
- Does an earthquake a gradual or abrupt event?
|
- mountains
- crevices
-What are different types of land formations created by earthquakes?
|
- San Andreas Fault
- Appalachian Mountains - Napa 2014 - Northridge 1994
- There are hundreds of fault lines in CA. Which fault line is the one we are living on?
-When plate tectonics move and shift upward, they form mountains. Which mountain range on East Coast is formed by this plate tectonics? |
- stay away from the glass
- cover your head - emergency plan and meeting place - disaster kit - retrofit buildings
-What should be the human safety procedure during an earthquake?
|
|
- permanent snow
- becomes firn ice (firn; leftover snow from last season) - glacier ice-very hard cut into rocks - river of ice, moves very slowly, carves into the soil
- What is a glacier?
-Does glacier ice cut through the rocks and carve into the soil? |
- slow
- flow about three feet per day
- What type of geological event are Glaciers?
|
- u-shaped valleys
- fjords; below sea level fill up with ocean water - glacial lakes - cliffs, shear edges - erratic boulders
-What are different types of land formations created by glaciers?
|
- Yosemite Valley
- Great Lakes
- Glaciers form a U-shaped valley; do you know the name of any U-shaped valley formed by glaciers?
- Which lakes are known as the largest glacial lakes in the world? |
- avoid crevasses
- no buildings
- What could be the safety guidelines if you are on a glacier?
|
|
- large ocean waves
- usually made by an underwater earthquake - move rapidly -travel 500 miles per hour
- How can you define tsunamis?
|
- abrupt
- Does a tsunami a gradual or abrupt event?
|
- erodes coastlines
- floods island - destroy reefs
- What are the destructions caused by tsunamis?
|
- Japan and Chile
- Pacific Islands
-Name some of the countries which are at higher risk of tsunamis?
|
- stay away from the coast
- find higher ground - seawalls - buoy warnings
-What should be the human safety procedure during a tsunami?
|
|
- occur in elevated areas, gravity,
- from a high place to a low place - erosion from wind and water
- Where do landslides occur?
- What are some reasons or causes of landslides? |
-fast or slow
- What type of geological event are landslides?
|
- pushed part of the mountain off the cliffs
- erodes mountains into hills and then plains
- What are the destructions caused by landslides?
|
-Yosemite
_________ is the place where landslide is very common.
|
- avoid areas of loose rocks on slopes
- plant vegetation
- If you are on a steep mountain slope or at a higher elevation, How can you keep yourself safe from a possible landslide?
|
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